mirror of
https://github.com/elliotnunn/mac-rom.git
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247 lines
7.9 KiB
C
247 lines
7.9 KiB
C
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/*
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File: PackageMgrPatches.c
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Contains: Routines which patch the Package Manager traps.
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Written by: Erich Ringewald
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Copyright: <EFBFBD> 1986-1992 by Apple Computer, Inc., all rights reserved.
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Change History (most recent first):
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<3> 3/31/92 DCL Include StandardFile. Because it was removed from Packages.h
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<0> x/xx/86 ELR New Today.
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*/
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#include <types.h>
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#include <memory.h>
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#include <quickdraw.h>
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#include <fonts.h>
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#include <events.h>
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#include <dialogs.h>
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#include <desk.h>
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#include <resources.h>
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#include <osutils.h>
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#include <packages.h>
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#include <standardfile.h>
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#include <retrace.h>
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#include <menus.h>
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#include <windows.h>
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#include <files.h>
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#include <toolutils.h>
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#include <segload.h>
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#include <AppleEventsInternal.h>
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#include "Glue.h"
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#include "Lomem.h"
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#include "Data.h"
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#include "SysMisc.h"
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#include "Patches.h"
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#include "Puppet.h"
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/************************************************************************************
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* Patch to SFGetFile/SFPGetFile (PACK3 selectors) for puppet string Open. This patch
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* is reached after we have told the application that there was a mousedown in the menu
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* bar, and then that the user selected the "Open<EFBFBD>" item from the menu. The application
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* calls PACK3, which we patch to come here. Instead of the usual modal dialog, we
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* just return a specification for the file being puppet Open'd. Of course, we have to
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* go through the normal hoops, like checking the type list and calling the file filter.
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* NOTE: This only works with the older-style SFGetFiles that employ a Working Directory.
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* The newer FSSpec-based ones are not supported, since callers using them should also
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* be AppleEvent-aware, and therefore never require puppet-stringing.
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************************************************************************************/
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/* Some function prototypes that should be in (yet another) header file */
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OSErr FileIDToAppFile(AETFDescriptor *, AppFile *, short *, long *);
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void NextListParam(AETFDescriptor **);
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/* Function prototypes for the application routines called by the SFGetFile handler. */
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typedef pascal short (*DialogHookPtr) (short item, Ptr theDialog);
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typedef pascal Boolean (*FileFilterFncPtr) (FileParam *paramBlockPtr);
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/* We truncate the file names we hand back, since they are generated by puppet master. */
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#define MAX_SF_FNAME_LEN (63)
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/* InTypeList. Check whether the puppet file is in the typelist given to SFGetFile. */
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Boolean
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InTypeList(long fType, SFTypeList *pSFTypeList, short numTypes)
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{
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/* count of zero means all types are OK */
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if (numTypes == (-1))
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return(true);
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/* traverse the array until type matches or the count is exhausted */
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while (--numTypes >= 0)
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if ((*pSFTypeList)[numTypes] == fType)
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return(true);
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/* Ze count he eez tired */
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return(false);
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}
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/* AcceptedByFileFilter. Call the filter, and return whether the file is OK. */
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short
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AcceptedByFileFilter(AppFile *pActiveDoc, Ptr fileFilterFnc)
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{
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CInfoPBRec myCInfoPBRec;
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unsigned long olda5;
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Boolean retval;
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if (fileFilterFnc == nil)
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return true;
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/* Get catalog info required by the filter */
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myCInfoPBRec.dirInfo.ioNamePtr = &pActiveDoc->fName;
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myCInfoPBRec.dirInfo.ioVRefNum = pActiveDoc->vRefNum;
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myCInfoPBRec.dirInfo.ioFDirIndex = 0;
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myCInfoPBRec.dirInfo.ioDrDirID = 0;
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if (PBGetCatInfo(&myCInfoPBRec, SyncHFS) != noErr)
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return(false);
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/* Filter returns whether should be filtered! Our return value has inverse sense. */
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olda5 = CurrentA5SimpleSetup();
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retval = (CALL_FNC_PTR(FileFilterFncPtr, fileFilterFnc, (&myCInfoPBRec)) == false);
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A5SimpleRestore(olda5);
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return(retval);
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}
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/* CopyWDToCurProc. Given an existing Working Directory refnum, open a new WD for the
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* same directory. The new copy is needed because a) the puppet master might close the
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* original, and b) WDs are tagged by HFS to the process that opened them, and
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* closes them when the process goes away.
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*/
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void
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CopyWDToCurProc(short wdRefNumSrc, WDPBRec *pWDPB)
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{
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pWDPB->ioVRefNum = wdRefNumSrc;
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pWDPB->ioWDIndex = 0;
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pWDPB->ioWDProcID = 0;
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pWDPB->ioNamePtr = nil;
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pWDPB->ioCompletion = nil;
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PBGetWDInfo(pWDPB, SyncHFS);
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pWDPB->ioVRefNum = pWDPB->ioWDVRefNum;
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pWDPB->ioWDProcID = 0;
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pWDPB->ioNamePtr = nil;
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pWDPB->ioCompletion = nil;
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(void) PBOpenWD(pWDPB, SyncHFS);
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}
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/* IsForcedOpen. The main patch to SFGetFile. If the call to SFGetFile is to get a
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* puppet file opened, set up the puppet file specification. Returns whether this
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* was done.
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*/
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Boolean
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IsForcedOpen(Ptr fileFilterFnc, short numTypes, Ptr dlgHook, SFTypeList *pSFTypeList, SFReply *pSFReply, short dlgID)
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{
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AppFile *pActiveDoc;
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EventListPtr activeInstrsPtr;
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EventListHdl activeInstrsHdl;
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EventRecord *pActiveEvent;
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Boolean isForcedOpen;
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PuppetVars *myPuppetVarsPtr;
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MFmsgBlkPtr msgBlk;
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WDPBRec wdpbRec;
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AppFile appFile;
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short theVol;
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long theDir;
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long strLengthPlus1;
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DialogPtr pDialog;
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unsigned long olda5;
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isForcedOpen = false;
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olda5 = ProcessMgrA5SimpleSetup();
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if (InstrsQueueIsEmpty() == false)
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if ((activeInstrsHdl = GetActiveInstrsHdl()) != nil)
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{
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HLock(activeInstrsHdl);
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activeInstrsPtr = *activeInstrsHdl;
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/* Since we really look at the instruction preceding the current one */
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assert((unsigned long)activeInstrsPtr->offset >= (SIZEOF_EVENTLIST_HDR + sizeof(EventRecord)));
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pActiveEvent = ((Ptr) activeInstrsPtr) + (unsigned long)activeInstrsPtr->offset;
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pActiveEvent--;
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if (*((char *)&pActiveEvent->what + 1) == app4Evt && (*((char *)&pActiveEvent->message) == instrOpen))
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{
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isForcedOpen = true;
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/* Make pActiveDoc->vRefNum a valid WD for the current process. Copy
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* it from current WD, or open it from translation vrefnum/dirid.
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*/
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myPuppetVarsPtr = &pCurrentProcess->p_puppetvars;
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if ((msgBlk = myPuppetVarsPtr->puppetEppcMsgBlk) == nil)
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{
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pActiveDoc = ((Ptr) activeInstrsPtr) + (pActiveEvent->message & LO3BYTES);
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CopyWDToCurProc(pActiveDoc->vRefNum, &wdpbRec);
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}
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else
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{
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pActiveDoc = nil;
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if (FileIDToAppFile((AETFDescriptor *) (msgBlk->addrOfMsg), &appFile, &theVol, &theDir) == noErr)
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{
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NextListParam((AETFDescriptor **) &msgBlk->addrOfMsg);
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wdpbRec.ioNamePtr = nil;
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wdpbRec.ioVRefNum = theVol;
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wdpbRec.ioWDProcID = 0;
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wdpbRec.ioWDDirID = theDir;
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wdpbRec.ioCompletion = nil;
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(void) PBOpenWD(&wdpbRec, SyncHFS);
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appFile.vRefNum = wdpbRec.ioVRefNum;
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pActiveDoc = &appFile;
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}
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}
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pSFReply->vRefNum = wdpbRec.ioVRefNum;
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if ( (pActiveDoc != nil)
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&& (InTypeList(pActiveDoc->fType, pSFTypeList, numTypes) && AcceptedByFileFilter(pActiveDoc, fileFilterFnc)) )
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{
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/* Call word dialog hook to clear r/o flag */
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if (dlgHook != nil)
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{
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/* Fake out word <= 3.01 to not make the doc r/o by giving it an extra init call */
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pDialog = GetNewDialog(dlgID, nil, (Ptr)(-1));
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if (pDialog)
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{
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(void) CurrentA5SimpleSetup();
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CALL_FNC_PTR(DialogHookPtr, dlgHook, (-1, pDialog));
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(void) ProcessMgrA5SimpleSetup();
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DisposDialog(pDialog);
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}
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}
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pSFReply->good = true;
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pSFReply->fType = pActiveDoc->fType;
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pSFReply->version = pActiveDoc->versNum;
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if ((strLengthPlus1 = Length(&(pActiveDoc->fName)) + 1) > (MAX_SF_FNAME_LEN + 1))
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strLengthPlus1 = MAX_SF_FNAME_LEN + 1;
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BlockMove(&pActiveDoc->fName, &pSFReply->fName, strLengthPlus1);
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}
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else
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{
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/* Tell sawdust-head that the PACK 3 failed */
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pSFReply->good = false;
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/* Shouldn't cancel, and needn't close WD, if the file translation failed */
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if (pActiveDoc != nil)
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{
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/* Close the WD, if we opened it */
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if (wdpbRec.ioWDCreated != 0)
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PBCloseWD(&wdpbRec, SyncHFS);
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/* Force back to offending instruction, then cancel */
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activeInstrsPtr->offset -= sizeof(EventRecord);
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CancelSwitchWithError();
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}
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}
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}
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HUnlock(activeInstrsHdl);
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}
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A5SimpleRestore(olda5);
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return(isForcedOpen);
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}
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